By Leigh Ann Caldwell, CNN
(CNN) - In an exclusive interview with CNN's Christiane Amanpour, Secretary of State John Kerry echoed President Barack Obama, saying it will take time for airstrikes to degrade ISIS.
"There's a definitely a second day and there will be a third and more. This is going to go on," Kerry said Wednesday.
The United States conducted a second day of airstrikes in Syria and Iraq since the expanded military campaign against ISIS.